基于信噪比估计的数字调频水声语音通信系统

Proceedings of the 13th International Conference on Underwater Networks & Systems Pub Date : 2018-12-03 DOI:10.1145/3291940.3291974

Xiaoquan Ke, Fei Yuan, Chun-xian Gao, En Cheng

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引用次数: 1

摘要

针对传统采用单边带(SSB)调制的水声话音通信系统性能不佳的问题，提出了一种采用调频(FM)的水声话音通信系统。提出系统实现数字调频调制和数字调频解调软件无线电,这将提高通信性能同时维护一个系统的低复杂度。为了准确估计水声信道的状态，我们改进了一种估计算法来估计接收信号的信噪比。为了提高解调效率，我们还提出了一种新的调频解调算法。

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A robust and efficient digital FM underwater acoustic voice communication system based on SNR estimation

Considering the poor performance of the traditional underwater acoustic voice-communication system that adopts single-sideband (SSB) modulation, we proposed an underwater acoustic voice-communication system adopting frequency modulation (FM). The proposed system achieves digital FM modulation and digital FM demodulation through software radio, which will improve the communication performance meanwhile maintaining a low complexity of the system. To accurately estimate the state of underwater acoustic channels, we improved an estimation algorithm to estimate signal-to-noise ratio (SNR) of the received signal. We also proposed a new FM demodulation algorithm to increase the demodulation efficiency.

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Proceedings of the 13th International Conference on Underwater Networks & Systems

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